N.1

Definitions for application to international sound-programme and television-sound transmission  

N.2

Different types of sound-programme circuit  

N.3

Control circuits  

N.4

Definition and duration of the line-up period and the preparatory period  

N.5

Sound-programme control, sub-control and send reference stations  

N.10

Limits for the lining-up of international sound-programme links and connections  

N.11

Essential transmission performance objectives for international sound-programme centres (ISPC)  

N.12

Measurements to be made during the line-up period that precedes a sound-programme transmission  

N.13

Measurements to be made by the broadcasting organizations during the preparatory period  

N.15

Maximum permissible power during an international sound-programme transmission  

N.16

Identification signal  

N.17

Monitoring the transmission  

N.18

Monitoring for charging purposes, releasing  

N.21

Limits and procedures for the lining-up of a sound-programme circuit  

N.23

Maintenance measurements to be made on international sound-programme circuits  

N.51

Definitions for application to international television transmissions  

N.52

Multiple destination television transmissions and coordination centres  

N.54

Definition and duration of the line-up period and the preparatory period  

N.55

Organization, responsibilities and functions of control and sub-control international television centres and control and sub-control stations for international television connections, links, circuits and circuit sections  

N.60

Nominal amplitude of video signals at video interconnection points  

N.61

Measurements to be made before the line-up period that precedes a television transmission  

N.62

Tests to be made during the line-up period that precedes a television transmission  

N.63

Test signals to be used by the broadcasting organizations during the preparatory period  

N.64

Quality and impairment assessment  

N.67

Monitoring television transmissions - Use of the field blanking interval  

N.73

Maintenance of permanent international television circuits, links and connections  

N.81

[Withdrawn] Definition for application to international videoconference transmissions  
This subject had only been identified and was left for further study. Then it was abandonned and the empty Recommendation was deleted

N.86

[Withdrawn] Line-up and service commissioning of international videoconference systems operating at transmission bit rates of 1544 and 2048 kbit/s  
Deleted because no system or equipment have implemented it during the last two study periods

N.90

[Withdrawn] Maintenance of international videoconference systems operating at transmission bit rates of 1544 and 2048 kbit/s  
Deleted because no system or equipment have implemented it during the last two study periods

N.Sup5.1

[Withdrawn] Requirements for the transmission of television signals over long distances  

N.Sup5.2

[Withdrawn] Setting-up and testing of international videoconference studios